Reversing switch



Patented May 5, 1931 UNITED STATES PATENT ()FFICE HEKTOR BRODT, OFZUCHWIL, NEAR SOLOTHURN, SWITZERLAND, ASSIGNOR TO SGIN'IILLAAKTIENGESELLSCHAFT, OF SOLOTHURN, SWITZERLAND REVERSING SWITCHApplication filed February 20, 1929, Serial No. 341,526, and in GermanyMarch 1, 1928.

The switches hitherto used for reversing the direction of the current inelectric installations have the disadvantage that the connections ot theleads are movable. This disadvantage is overcome according to theinvention by the contacts for the incoming current being located betweenthe contacts for the outgoing current and the switch member beingU-shaped and resilient and embracing the contacts for the incomingcurrent on two sides by means of conductively connected contact pieces,the switch member, when reversing, lifting one contact piece of" thecontact for the incoming current and bringing it into contact with thecontact for the outgoing current, while the other Contact piece remainsin contact with the contact for the incoming current.

In the accompanying drawing an electromagnetic reversing switch is shownas a con s ructional example diagrammatically in 1, Fig. 2 being adiagram of connections for the reversing switch.

A and B are the contacts for the incoming current, which are arrangedbetween the contacts C, D and E, F for the outgoing current in parallelplanes with respect to one an other. S is the switch member which isactuated by the double magnet R and the resilient contact pieces H, Jand G, K of which rest on either side against the contacts A and B forthe incoming current. The contact pieces are conductively connectedtogether and are fixed to the switch member which is provided with twoarmatures N, 0 so as to be insulated from the same.

On the coil L of the magnet being ener gized, it attracts the armature Nand the contact pieces H, G are pressed against the contacts C, D forthe outgoing current, while the contact pieces J, K remain in'contactwith the contacts for the incoming current. A current thus flows from Aover J, H, G the terminal P, the consumer T, the terminal Q,

and contacts D, G, K to B. When the direction of the current is to bereversed, the coil M of the magnet R is energized, which attracts itsarmature O and moves the contact pieces E J, K against the contacts E, Ffor the outgoing current while the contact pleces H, G

remains connected to the contacts A, B for the incoming current. Thecurrent then flows in the opposite direction to the previous directionthrough the consumer, viz. from A over H, J, E, terminal Q, consumer T,termi nal P and contacts F, K, G to B.

instead oi? performing a straight line motion the switch member mayperform a rotary motion with respect to the contacts. Instead of beingactuated electro-magnetically it may also be actuated mechanically orelcctro mechanically. The switch member may also be made with one armonly, in which ca e the contacts for the incoming and for the outgoingcurrent must be suitably positioned below one another or next to oneanother.

What I claim is:

1. A switch for reversing the direction of the current in electricinstallations, including a pair of contacts for the incoming current,two pairs of contacts for the outgoing current, each of said first-namedcontacts being located between a pair of the said second named contactsand switching members comprising two pairs of resiliently mountedconductively connected contact pieces, one pair of said contact piecesembracing each of said first-named contacts, substantially as and forthe purposes described.

2. A switch as claimed in claim 1 wherein the switching members aremounted symmetrically upon a two-armed lever.

In testimony whereof I have signed my name to this specification.

HEKTOR BRODT.

